Sizing machine



M. F. MAY

SIZING MACHINE Nov. 24, 1953 4 Sheets-Sheet 1 Filed Oct. 9, 1947 YmWNINVENTOR. /f Mag.

ATTORNEY Nov. 24, 1953 M. F. MAY 2,660,076

SIZING MACHINE Filed Oct. 9, 1947 4 Sheets-Sheet 2 IN VEN TOR. M1722;471

ATTORNEY Nov. 24, 1953 M. F. MAY

SIZING MACHINE Filed Oct. 9, 1947 4,Sheets-Sheet 5 BY/V ZZEZAQTOR.

' ATTORNEY M. F. MAY

SIZING MACHINE Nov; 24, 1953 4 Sheets-Sheet 4 Filed Oct. 9, 1947 m m m mI [/fbnf/Va y 14% mz ATTORNEY Patented Nov. 24, 1953 ATENT OFFIE MiltonF, May, Saginaw, Mich. a ion Qctohe 9, 1 .47 Serial N- 7 8454?invention. rel tes. o a meo lhe i9? e9- c rate yls zine a d. th 11h andlen th oi Qill ss be a, porous nature calla le, i n

One of the prime chiects oi he 1 to d sign a new simpl ractica avsimachine .for sizing hearin s whic ll working parts are concentric to theI D ram and'in which the 1,. Q. Q t Sizing ar perfo med pro er s Quent nWill out r m val of, the work from. he mach ne s that the same center ismaintained at all times, making for extreme accurac plq liction,

Another object is to .prcyi e a siz n machin which cupies a limitedfloor space a d b means of which.maximumproduction is obtained with aminimum of labor and i E the siging" head can be disposed in either ahorizontal or vertical position, so that it can be designed to best suitthe work, promoting greater ginciencyand economy of operation.

Aiurther object to provide a sizing machine in which all die head movingparts a e h punch section only so that true concentricity is obtained.

Still a furtherobject is to design a siz n Z 1 chine of simple, sturdy,and practica QQILSJH AQ- tion which can :be readily manuiactu ied andassembled, and which can be designed to meet reasonable productionrequirement. Wi-th the above and other objects in view, the presentinvention consists in the combination and arrangeinent of parts,hereinafter more fully described, illustrated in the accomnanying eawings, andmore particularly pointed out the appended claims, it beingunderstood that changes may be made in the form, size, proportion, andninor details of construction, without departing from the spirit, orsacrificing any of the advantages of the invention.

" In the drawings:

g. 1 is a fronteelevational view of m improved sizing machine.

gig/21S an end-.elevationalyiew thereoi, Fig. '3 is an enlarged,fragmentary, '1 i 'l tdinalqsectional view through one of the cylinder hflooding. ee n me hanism, etc. bein omitted, the mechanism being shownosition at-the end of its inward stroke,-

Fig. 4 is a top planfiview thereof Fig. 5 is a view similar to Fi ;3.Showing also the block and loading mechanism, the ra n, etc. being shownat the end .Of its outward st one.

Fig. .6 is an end yiew showing also the trough, the loading member b inshown th end of its downward stroke. 4

2 Fig. '7 is a fragmentary, sectional yiew showing the mechanismretraoted. ,ig. 8 is a perspective detail view of the loading member.

Fig. 9 is an isometric view showing the article trough extension.

Fig. 1() is a View similar to Fig. 6 showing the loading member at theend of its upward stroke.

The sizing machine is preferably hydraulically operated, and comprises ahousing Ill having a fiat top section II on which a plurality of'dieheads H are mounted, each head being of identical design andconstruction, so that a description of but one head will suiiice forall.

The housing l6 can be of any desired shape or design, and the heads canbe mounted either horizontally as shown or vertically if desired, and

' the hydraulic actuatingmeans and control l2 and I3 respectively areofstandard design, and

20 I shall not show or describe them in detail as they iprm nopart ofthe instant ap lica on whi i directed to the sizing head and loadingmeans only, "Each of the heads I-I comprises a cylinder block .14. hicks re oun ed in p sed elation; each block having end'caps I5 and I6respec'tively generally'rectangular in shape, which are sec r d in poson b means of say" bo ts l1, and openings [8 are provided as usual forsecuring the head to the table.

it c'entrally disposed opening 19 is provided in the end cap 15 "of thehead and slidably accommodates the stem 20 of a hollow ram" bodyZl whi his dab moun e o re iproca ino ement in the cylinder l4, and alongitudinally 11. D; $53 9 P 1 ha h fid ngagement withthe end wall oithe ram body and 1s inovable with said ram.

eer sh e 2! is s d il t inner an iihod il 2cm I slides the e. sec i i th5 5 en a es th qui ed a f r mna tms e e e en w s liq l t ei iii Fi -14.

The die holder 23 is internally bored asshown t9 agc g d te tri per anlen th nest ng t9. he nte i of the si r sheii dei si a 35 Isa? should lit the shouldered section 3i of the die holder when the mechanism is inretracted position as shown in Fig. 3. The member 29 is moved forwardlyby the ram 2| engaging the rear end thereof near the end of its forwardstroke and is retracted upon engagement of the shoulders 3t and 3!during the return stroke. Stationary pins 32 extend through suitableopenings in the ram body and the ram is slidable with relation thereto,one end of the pins bearing against the hardened insert I while theopposite ends butt against the one end of the length sizing member 251as usual.

The head 33 of the length adaptor D is rigidly mounted in the shoulderedend 35 of the stripper V 29, said adaptor including a stem 36 whichclosely fits and slides on the I. D. punch 22, the stem 36 projectinginto the bore 3? of the O. D. die adaptor 38, which is in turn mountedin the bored shouldered end of the die holder 23 and secured in positionby means of setscrew 39.

A stationary guide block *3!) is mounted on the top section I i of thehousing Hi at a point closely adjacent to and in longitudinal alignmentwith the cylinder block H (see Fig. 5 of the drawings), said blockhaving a bored passage M opening into an enlarged bore G2 in which acentrally bored length adaptor 53 is mounted and held by means of asetscrew M, the stem 35 of the adaptor closely fitting the bore 31 ofthe die adaptor 58 and being slidable therein, the tapered end of thepunch '22 i being in horizontal alignment with and projecting into andthrough the adaptor 43 as the mechanism is actuated and as indicated inFig. 7 of the drawings.

The loading and ejecting mechanism comprises an angularly disposedloading member Q3 (see 1 Figs. 6, 7, 8 and of the drawings) disposed atsubstantially right angles to the path of travel of the ram 2 l this isformed with a stem i? the member being actuated by a solenoid (notshown) and is mounted for substantially vertical reciprocatory movementin gibs 58 provided as shown. A shouldered stop (i9 is formed on theloading member it for engagement with an abutment member 59 provided onthe table (see Fig. 6 of the drawings), this member serving as a stopand horizontal adjustment for the loading member and further controlsthe length of stroke.

A shoulder 5! is provided on the one side of the loading member 4% andan upwardly projecting pin 52 is mounted on the upper face of saidshoulder.

A vertically disposed stoplate 53 is mounted on the inner face of theshoulder 51 by means of screws 5 and a notched opening 55 is provided inthe upper end of said plate and for a purpose to be presently described.

The face 56 of the loading member 46 is longitudinally slotted as at 51(see Figs. 6, 7 and 10) and a vertically disposed inverted, T-shapedejector member 58 is mounted to slide longitudinally therein, thisejector being slotted as at 59 and a screw 61) extends through said slotand is threaded into the end of the die holder 23.

Obviously, the member 58 moves up and down with the member 46, but isslidable longitudinally relative thereto when the die holder 23 movesforwardly to the position shown in Fig. 5.

A stop BI is mounted on the end wall of the die holder 23 and serves tolimit the downward travel of the bearings as they are fed to themachine.

An inclined trough 62 leads to the loading mechanism of each head, theend of the trough terminating at the stop plate 53, and the bear- 4 ingsB are fed to the trough in any desired manner.

A short trough section 63 is mounted on the face of the die adaptor 38in direct alignment with the trough 62 (see Fig. 9) so that incomingbearings feed from the trough 62 through the section 63 and thence rollagainst the stop 6| to center the bearing B in the mechanism.

A pin opening 64 is provided in the bottom wall of the trough 62 and asthe ejecting mechanism is actuated, the control member 53 moves upwardlyto position to permit a bearing B to roll from the trough 62 into thesection 83 (see Fig. 10 of the drawings) and thence against the stop 6|,the pin 52 extending through opening 64 and permitting but one bearingat a time being fed into the mechanism.

A plate 65 is mounted on the end of the die holder 23 and an opening 65is provided adjacent the edge thereof, a longitudinally disposed pin 66being mounted on the end cap it and is slidab'le in said opening toprevent rotation of the die holder in the cylinder H! as the mechanismis reciprocated.

An ejector spring 61 is secured to the plate 65 in any desired manner,and is turned as at 88 (see Fig. 6 of the drawings) to provide a limitedpassage between the stop (it and the turned section of the spring 61,and when the sized bearings B are forced upwardly by the upward movementof the member 46 and ejector member 58, it flexes the spring 61 so thatthe sized stock is snapped out of the machine and into a suitablereceptacle (not shown).

An air line 69 spans the opposed heads H and opens into each of theopposed cylinders l4 (see Fig. 1 of the drawings). Air freely flows fromone cylinder to the other because when the ram in the one cylinder is onits outward stroke, the air in the space between the ram body and theadjacent cap I5 of the cylinder is forced through line 69 into theopposed cylinder where the ram body is on its inward stroke, andinasmuch as these ram mechanisms are in opposed relation, it will beobvious that the air is forced alternately from one cylinder to theother as the mechanism is actuated.

part of the present invention.

The operation of the head is as follows:

With the ram mechanism etc. in position as shown in Fig. 3 of thedrawings, the control member 53 is actuated to permit a singlepre-formed bearing or artidle B to roll, by gravity, from trough 62 downagainst stop Bl, as clearly shown in broken lines in Fig. 6 of thedrawings. With the bearing B in proper position in alignment with thebore 31 in the die adaptor 38, the ram 2| is actuated by the collar 10,which is connected to a source of power (not shown). The punch 22 isthreaded in the inner face of the ram and as the ram moves outwardly onits work-engaging stroke, the tapered end of the punch '22 passesthrough bearing B to accurately size the I. D.

movable length sizing member 29 in which the length adaptor Dis mounted,forcing the die adaptor which moves with the die holder over the bearingB to size the O. D. thereof, and the stem 36 of length adaptor D againstthe one end of bearing B to wedge it between the ends. of the stems 36and 45 and accurately size it to proper length. Upon the return stroke,the ram body and punch are retracted, withdrawing the punch from thestationary length adaptor, the stripper shoe 2? engaging the shoulder 25of the die holder 23 to retract same, and the inner shoulder of the dieholder engages the shouldered section 3| of the movable length sizingmember to retract it as the ram moves back to original position, thebearing B being ejected by upward movement of the ejector member 58.

I wish to direct particular attention to the fact that the bearing Bdoes not move, the punch 22, die holder 23, die adaptor 38, and movablelength sizing member 29 moving with relation thereto. The loadingmechanism 46 then moves upwardly, forcing the finished article outwardlybetween the stop BI and the turned section 68 of the spring 61 whichsnaps the article into a receptacle (not shown), this movement of theloading member admitting anunfinished article simultaneously with theejection of the sized article.

The member 46 as noted is actuated by a solenoid or other suitable meansconnected-to the rod 41 and moves, of course, in timed relation relativeto the stroke of the ram 2|.

The forward movement of the member 29 (and thereby the adaptor D) uponengagement of the ram 2! with the rear end of the member 29 is and needonly be slight to size the length of the bearing. When the ram 2| isretracted, the member 27 in moving rearwardly, engages the shoulder 25to return the die holder 23 to rearward position and the shoulder 3| onthe die holder 23 engages the shoulder 30 to return the member 29 andthereby the member D, rigid therein, to position. Note that the member58 supports the bearing (Fig. 7) while the inner diameter thereof isbeing sized by the punch 22, and that the body of punch 22 then supportsthe bearing while the member 58 moves forwardly with the die holder 23(Fig. Clearly, the punch 22 will continue to support the bearing duringthe return stroke until after the member 58 has returned to its originalposition and will finally be withdrawn from the bearing to permitejection of the bearing by the ejector 58.

From the foregoing description, it will be obvious that I have perfecteda very simple, practical and relatively inexpensive, high-productionmechanism for accurately sizing a bearing and parts of a similar nature.

What I claim is:

1. An apparatus for sizing pre-formed articles comprising a cylinder, ahollow ram reciprocatingly mounted therein and having a centrallydisposed I. D. punch secured thereto and projecting outwardly therefrom,a bored die holder and die adaptor mounted in said cylinder and actuatedby said ram, said die holder and adaptor being reciprocable in saidcylinder and having predetermined, limited longitudinal travel withrelation to said ram, a movable length sizing member mounted in saidhollow die holder and provided with a longitudinally projecting hollowstem through which said I. D. punch extends, a guide block adjacent theone end of the cylinder, a centrally bored, stationary, length adaptormounted in said guide block and formed with a hollow" stem disposed inlongitudinal alignment with and slidably receivable in the bore in thedie adaptor, means for supporting a zpreeformed article in horizontalalignment with the hollow stem and the bore in the die adaptor andthrough which the I. D. punch travels, said punch, die adaptor, andlength adaptors successively engaging said article in predeterminedsequence to accuratelysizfi theI. 1)., the O. D- and the length of the.article on the work-eng in stroke of said ram.

2. The combination defined in claim 1 in'which the interior of thehollow ram is shouldered and the exterior of the die holder is alsoshouldered at spaced-apart points to permit the relative longitudinalmovement of the ram with relation to the die holder.

3. The combination defined in claim 1 in which a stripper shoe ismounted on the open end of the ram for engaging one shouldered sectionof the die holder to return it to original, retracted position after ithas reached the outward limit of its work-engaging stroke.

4. An apparatus for sizing pro-formed articles comprising a hollowcylinder, a hollow ram reciprocatingly mounted therein and having acontrally disposed I. D. punch secured to and projecting outwardly fromthe open end thereof, a die holder slidable in said cylinder and formedwith a reduced section extending into the open end of said hollow ram,said die holder being formed with a shouldered section engageable bysaid ram for moving it outwardly in said cylinder at a certain point inthe outward work-engaging stroke of said ram, a length sizing membermounted in said die holder and including a length adaptor formed with ahollow stem through which said punch projects, a centrally bored dieadaptor mounted in the die holder, a stationary guide block adjacent toand in longitudinal alignment with said cylinder and die adaptor, astationary length adaptor mounted in said block in alignment with the I.D. punch and through which said punch extends as the apparatus isactuated on its outward work-engaging stroke to successively size the I.D., the O. D. and the length of the pre-formed article in predeterminedsequence on the work-engaging stroke of said ram.

5. An apparatus for sizing pre-formed articles having an openingtherethrough comprising a cylinder, a hollow ram reciprocatingly mountedtherein and including an I. D. punch projecting outwardly therefrom, ahollow die holderreciprocatingly mounted in the cylinder and formed witha shouldered section extending into said hollow ram, a length sizingmember mounted in said die holder and provided with a hollow stem, 2.centrally bored die adaptor mounted in the die holder and through whichthe punch extends, a guide block adjacent the one end of the cylinder, astationary length adaptor mounted in said block and formed with 'ahollow stem in longitudinal alignment with the I. D. punch and the borein the die adaptor and through which the punch travels on itswork-engaging stroke, said punch, the adaptor, and length adaptorssuccessively engaging said article to size it to predetermined I. D., 0.D. and proper length on the outward work-engaging stroke of said ram.

6. The combination defined in claim 5 in which a hardened insert isprovided in the one end wall of said cylinder, longitudinally disposedstationary pins bearing against said insert and extending thrbugh thehollow ram with their Number opposite ends engageable with the lengthsizing 946,584 member for limiting the return travel of said 1,224,805length sizing member on the return stroke of 1,354,779 said ram. 51,415,459 MILTON F. MAY. 1,493,103 1,619,971 References Cited in thefile of this patent 1 722 737 UNITED STATES PATENTS 1,741,033 NumberName Date 10 1944246 King Aug. 3, 1880 8 Name Date Smith 1 Jan. 18, 1910Stevenson May 1, 1917 Rydbeck Oct. 5, 1920 Limont May 9, 1922 CarlsonMay 6, 1924 Dean Mar. 8, 1927 Claus July 30, 1929 Neidlinger Dec. 24,1929 Langhammer Jan. 23, 1934

